When you were only six I was your big brotherThen when you were ten We didn't like each otherWhen you were thirteen You were my funny valentineBut since you've grown up Your future is sewn upFrom now on you're gonna be mine, so

If I should smile with sweet surpriseIt's just that you've grown up before my very eyesYou've turned into the prettiest girl I've ever seenHappy birthday sweet sixteen

If I should smile with sweet surpriseIt's just that you've grown up before my very eyesYou've turned into the prettiest girl I've ever seenHappy birthday sweet sixteen